diff --git a/systems/ceres/config/filesystem.nix b/systems/ceres/config/filesystem.nix
index 31b5a19..99b15e4 100755
--- a/systems/ceres/config/filesystem.nix
+++ b/systems/ceres/config/filesystem.nix
@@ -14,6 +14,8 @@ in
       fsType = "btrfs";
       options = [
         "subvol=@"
+        "compress=zstd"
+        "noatime"
       ];
     };
 
@@ -75,7 +77,8 @@ in
     hideMounts = true;
     directories = [
       "/var/log"
-      "/var/lib"
+      "/var/lib/nixos"
+      "/var/lib/systemd/coredump"
       "/var/cache"
       "/etc/ssh"
     ];